Low-voltage Ride-through Methods for Grid-connected Photovoltaic Systems in Microgrids: A Review and Future Prospect

Power quality is a concern for utility and grid operators due to a large penetration of intermittent and stochastic renewable power generation sources. One of the major concerns, when designing and controlling grid-feeding photovoltaic (PV) inverters is meeting the grid requirements. International grid requirements demand low-voltage ride-through (LVRT) capability and maintaining grid functionality during fault conditions. This paper presents a comprehensive review for several control techniques to assure the LVRT capability of grid-feeding converters as well as discussing their respective advantages and limitations in detail. Areas for further research are identified afterwards. Finally, the conclusion gives a brief summary and critique of the findings.

[1]  Peng Zhang,et al.  A Direct Phase-coordinates Approach to Fault Ride Through of Unbalanced Faults in Large-scale Photovoltaic Power Systems , 2015 .

[2]  N. F. Guerrero-Rodríguez,et al.  Control and synchronization algorithms for a grid-connected photovoltaic system under harmonic distortions, frequency variations and unbalances , 2015 .

[3]  Mohammad Reza Miveh,et al.  A New Compensation Control Strategy for Grid-Connected Wind Turbine and Fuel Cell Inverters in a Microgrid , 2017 .

[4]  Luis García de Vicuña,et al.  Voltage Support Control Strategies for Static Synchronous Compensators Under Unbalanced Voltage Sags , 2014, IEEE Transactions on Industrial Electronics.

[5]  Xiaoqiang Guo,et al.  Flexible Power Regulation and Current-Limited Control of the Grid-Connected Inverter Under Unbalanced Grid Voltage Faults , 2017, IEEE Transactions on Industrial Electronics.

[6]  Frede Blaabjerg,et al.  A Low-Voltage Ride-Through Technique for Grid-Connected Converters With Reduced Power Transistors Stress , 2016, IEEE Transactions on Power Electronics.

[7]  Xiong Du,et al.  Power oscillation analysis and control of three-phase grid-connected voltage source converters under unbalanced grid faults , 2016 .

[8]  Frede Blaabjerg,et al.  Power Controllability of a Three-Phase Converter With an Unbalanced AC Source , 2013, IEEE Transactions on Power Electronics.

[9]  Vassilios G. Agelidis,et al.  Single- and Two-Stage Inverter-Based Grid-Connected Photovoltaic Power Plants With Ride-Through Capability Under Grid Faults , 2015, IEEE Transactions on Sustainable Energy.

[10]  Miguel Castilla,et al.  Control Strategy to Maximize the Power Capability of PV Three-Phase Inverters During Voltage Sags , 2016, IEEE Transactions on Power Electronics.

[11]  Vassilios G. Agelidis,et al.  Positive- and negative-sequence control of grid-connected photovoltaic systems under unbalanced voltage conditions , 2013, 2013 Australasian Universities Power Engineering Conference (AUPEC).

[12]  Ahmed M. A. Haidar,et al.  A comprehensive review of synchronization methods for grid-connected converters of renewable energy source , 2016 .

[13]  P LakshmanNaik,et al.  Design and Performance of a PV-STATCOM for Enhancement of Power Quality in Micro Grid Applications , 2017 .

[14]  Prakash Kumar Hota,et al.  Power Quality Analysis of a Grid-connected Solar/Wind/Hydrogen Energy Hybrid Generation System , 2018 .

[15]  Bin Wu,et al.  DC-Link Current Ripple Mitigation for Current-Source Grid-Connected Converters Under Unbalanced Grid Conditions , 2016, IEEE Transactions on Industrial Electronics.

[16]  J. Miret,et al.  Control Scheme for Photovoltaic Three-Phase Inverters to Minimize Peak Currents During Unbalanced Grid-Voltage Sags , 2012, IEEE Transactions on Power Electronics.

[17]  Frede Blaabjerg,et al.  Flexible Active Power Control of Distributed Power Generation Systems During Grid Faults , 2007, IEEE Transactions on Industrial Electronics.

[18]  Patrick Wheeler,et al.  Resonant control system for low-voltage ride-through in wind energy conversion systems , 2016 .

[19]  Viktor Valouch,et al.  Power Control of Grid-Connected Converters Under Unbalanced Voltage Conditions , 2015, IEEE Transactions on Industrial Electronics.

[20]  Fei Wang,et al.  Design and analysis of active power control strategies for distributed generation inverters under unbalanced grid faults , 2010 .

[21]  Mohd Wazir Mustafa,et al.  Power Quality Improvement in Autonomous Microgrids Using Multi-functional Voltage Source Inverters: A Comprehensive Review , 2015 .

[22]  Juan C. Vasquez,et al.  Microgrids: Hierarchical Control and an Overview of the Control and Reserve Management Strategies , 2013, IEEE Industrial Electronics Magazine.

[23]  Mohd Wazir Mustafa,et al.  DIgSILENT modelling of a four-leg power converter using a triangular carrier wave , 2017, 2017 IEEE Conference on Energy Conversion (CENCON).

[24]  Xing Zhang,et al.  Analysis and Control of Neutral-Point Voltage for Transformerless Three-Level PV Inverter in LVRT Operation , 2017, IEEE Transactions on Power Electronics.

[25]  D. G. Holmes,et al.  Double synchronous frame current regulation of distributed generation systems under unbalanced voltage conditions without sequence current separation , 2015, 2015 IEEE Applied Power Electronics Conference and Exposition (APEC).

[26]  Ehsan Afshari,et al.  A low-voltage ride-through control strategy for three-phase grid-connected PV systems , 2017, 2017 IEEE Power and Energy Conference at Illinois (PECI).